Telescopic escalator and engineering vehicle

Abstract

The utility model discloses a telescopic escalator which comprises a handrail, a plurality of pedals and a plurality of pull rods. The pedals are sequentially arranged on the handrail in the vertical direction, each pedal is provided with a first connecting end and a second connecting end which are oppositely arranged, and the first connecting ends are rotatably arranged on the handrail; the plurality of pull rods are respectively arranged between the adjacent pedals, and each pull rod is connected between the first connecting end of one pedal and the second connecting end of the other pedal; the escalator further comprises a driving unit, and the driving unit is in transmission connection with any pedal except the pedal on the uppermost layer and used for driving the connected pedal to move relative to the pedal on the uppermost layer, so that the telescopic escalator is driven to be unfolded or folded. The utility model further discloses an engineering vehicle using the telescopic escalator.

Description

TECHNICAL FIELD

[0001] The utility model relates to escalator technical field, especially a telescopic escalator and engineering vehicle. BACKGROUND

[0002] The crane is widely used in construction site, port, mine and other operation scenes, and the cab is often arranged at a high position to provide a wider field of view. Although the high cab design improves the operation field of view, it also brings certain inconvenience to the up and down of the operator. Therefore, the crane equipment is usually equipped with an escalator to facilitate the operator to get on and off the cab and ensure the work convenience and safety.

[0003] In the related art, the crane usually adopts a vertically installed escalator, which is usually arranged along the main body of the equipment to minimize the space occupation and is relatively simple in structure. Although the above-mentioned escalator realizes effective utilization of space, due to the vertical design of the escalator, the operator needs to climb approximately vertically when getting on and off, especially in the case of needing to frequently get on and off the equipment, there is a defect of inconvenient climbing.

[0004] More importantly, in rainy, snowy and other bad weather conditions, due to the slippery surface of the escalator and the limited support angle caused by the vertical design, the operator is difficult to obtain effective support during the climbing process, and it is easy to slip or lose balance, which has a safety hazard. SUMMARY

[0005] Therefore, the purpose of the utility model is to provide a telescopic escalator and crane, which can reduce the climbing difficulty, improve the safety and have small space occupation.

[0006] The utility model provides a telescopic escalator, which comprises a handrail, a plurality of steps and a plurality of pull rods.

[0007] The plurality of steps are sequentially arranged on the handrail in the up-down direction, wherein each step has oppositely arranged first and second connecting ends, and the first connecting end is rotatably mounted on the handrail; the plurality of pull rods are arranged between adjacent steps, and each pull rod is pivotally connected between the first connecting end of one step and the second connecting end of another step.

[0008] The telescopic escalator further comprises a driving unit, which is drivingly connected with any step except the uppermost step, and is used to drive the connected step to move relative to the uppermost step, thereby driving the telescopic escalator to open or fold.

[0009] In an embodiment, a linkage rod is further included, and the second connecting end of each step is rotatably mounted on the linkage rod.

[0010] In an embodiment, the pull rods and the linkage rod are each a length-adjustable telescopic rod.

[0011] In an embodiment, the tread surface of the tread board is provided with an anti-skid structure.

[0012] In an embodiment, the first connecting end of each tread board is provided with a first pivot rotatably penetrating the handrail and the end of one pull rod.

[0013] In an embodiment, the second connecting end of each tread board is provided with a second pivot rotatably penetrating the end of one pull rod and the linkage rod.

[0014] In an embodiment, each pull rod has opposite first and second ends, the first end being arranged adjacent to the first connecting end of one tread board and rotatably sleeved on the first pivot, and the second end being arranged adjacent to the second connecting end of another tread board and rotatably sleeved on the second pivot.

[0015] The utility model also provides an engineering vehicle, including car body, with the car body connects the fixed plate, and above-mentioned telescopic ladder, the most upper layer's tread board of telescopic ladder is installed on the fixed plate.

[0016] In an embodiment, the driving unit is arranged on the car body.

[0017] In an embodiment, the driving unit includes a hydraulic cylinder, and the telescopic rod of the hydraulic cylinder is connected to any one tread board except the uppermost tread board.

[0018] The telescopic ladder provided by the utility model installs rotatable tread board on handrail, controls telescopic ladder to open or to be taken up through driving unit, can adjust the inclination angle of telescopic ladder according to demand, reduces the climbing difficulty.In addition, through the pull rod set, the tread board can maintain the horizontal state in the whole telescopic process, and the operator does not need to adapt to the change of different tread board angles when climbing up and down, and the safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be simply introduced to the drawings needed to be used in the embodiment, and should understand, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0020] Figure 1 The telescopic ladder expansion state structure schematic diagram provided by the preferred embodiment of the utility model.

[0021] Figure 2 The telescopic escalator contraction state structure schematic view is provided for the preferred embodiment of the utility model.

[0022] Figure 3 The telescopic escalator installation schematic view is provided for the preferred embodiment of the utility model.

[0023] Reference signs: 1, handrail; 2, pedal; 3, pull rod; 4, linkage rod; 5, drive unit; 6, first pivot; 7, second pivot; 8, fixed plate; 9, vehicle body; 21, first connecting end; 22, second connecting end. DETAILED DESCRIPTION

[0024] The specific embodiments of the utility model will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the description of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, which is only for the convenience of description and simplification of description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] The terms "first", "second", "third" and the like are only for distinguishing similar attributes of elements, and are not intended to indicate or imply relative importance or a particular order.

[0028] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, in addition to containing the listed elements, other elements not explicitly listed can also be contained.

[0029] Please refer to Figures 1-2The utility model embodiment provides a telescopic escalator, including handrail 1, a plurality of pedal 2, a plurality of pull rod 3 and drive unit 5. Among them, handrail 1 is composed of two parallel support poles, the distance between support pole can be set according to the need of use, a plurality of pedal 2 are sequentially arranged between two support poles along the up-down direction, every pedal 2 has oppositely arranged first connecting end 21 and second connecting end 22, first connecting end 21 is rotatably installed on handrail 1, a plurality of pull rod 3 are respectively installed between adjacent pedal 2, and every pull rod 3 is connected between the first connecting end 21 of a pedal 2 and the second connecting end 22 of another pedal 2. And the end of pedal 2 away from handrail 1 is provided with linkage rod 4, and the second connecting end 22 of every pedal 2 is rotatably installed on linkage rod 4, when the operator controls drive unit 5 to carry out angle adjustment to telescopic escalator, any pedal 2 except the uppermost pedal 2 moves to the direction away from the uppermost pedal under the drive of drive unit 5, at this time, handrail 1 is inclined outward under the drive of pedal 2, since pedal 2 is all installed on handrail 1, the movement of any pedal 2 will drive handrail 1 to swing, and further drive the corresponding movement of other pedal 2 connected therewith, to realize that telescopic escalator opens or is taken up.

[0030] Specifically, the end of the first connecting end of every pedal 2 is provided with a first pivot 6, the first pivot 6 is rotatably penetrated in the handrail 1 and the end of a pull rod 3, the end of the second connecting end of every pedal 2 is provided with a second pivot 7, the second pivot 7 is rotatably penetrated in the end of a pull rod 3 and the linkage rod 4. Every pull rod 3 has opposite first end and second end, the first end is adjacent to the first connecting end of a pedal 2 and is rotatably sleeved on the first pivot 6, and the second end is adjacent to the second connecting end of another pedal 2 and is rotatably sleeved on the second pivot 7, so that the pull rod 3 and the first connecting end of pedal 2 all rotate with the first pivot 6 as the center.

[0031] In the embodiment, the first pivot 6 and the second pivot 7 can be bolts, the bolt includes a threaded segment and a smooth rod segment, the threaded segment is threadedly connected with the pedal 2, and the pull rod 3 and the linkage rod 4 are sleeved on the smooth rod segment. The first pivot 6 and the second pivot 7 can also be a pin shaft, but are not limited thereto.

[0032] In order to maintain the horizontal state of the pedal 2 during the entire telescopic process, in the embodiment, the pull rod 3 and the linkage rod 4 are both telescopic rods, and the structures of the two can be adjustable rods composed of a plurality of sleeves, which can change the length according to the distance between the pedals 2.

[0033] In practical applications, the position of the uppermost step 2 can be fixed and kept horizontal, when the telescopic ladder is extended to the limit position, the pull rod 3 is at the longest limit length, at this time the pull rod 3 is locked by the locking structure, it can be regarded as a rigid rod, which can provide a pulling force for the adjacent step 2 to offset the inclination caused by gravity or lateral force, and keep it horizontal. The linkage rod 4 also plays an important supporting role, when the telescopic ladder is retracted, the linkage rod 4 is at the shortest limit length, it can provide support for the adjacent step 2, when the distance between the steps 2 increases, the linkage rod 4 can be stretched and adjusted to the appropriate length.

[0034] Preferably, when the telescopic ladder is retracted, the projections of the plurality of steps 2 in the vertical direction coincide, the entire telescopic ladder is in a vertical state, so that the ladder can be more easily stored when not in use, especially suitable for cranes or other equipment that need to operate in limited space, improving the space utilization efficiency. At the same time, the overlap of the plurality of steps 2 in the vertical direction can improve the strength and rigidity of the overall structure, reduce the possibility of shaking or deformation in the retracted state, thereby improving the safety and reliability during use.

[0035] Further, the tread of each step 2 is provided with an anti-skid structure, which can be a surface protruding structure or an anti-skid pad, the design of the anti-skid structure increases the friction between the step 2 and the bottom of the operator's shoes, so that the operator can stand more stably when walking and standing, and the grip is enhanced. Whether in fast movement or in the case of needing to stand firmly, accidental sliding can be effectively prevented. Especially in rainy, snowy or other slippery conditions, the risk of the operator slipping on the step 2 can be significantly reduced, thereby improving the overall safety.

[0036] The utility model also provides an engineering vehicle, including car body 9, with car body 9 connects fixed plate 8 and above telescopic ladder, the uppermost step 2 of telescopic ladder is installed on fixed plate 8. Figure 3 As shown, the fixed plate 8 not only provides a fixed point for the telescopic ladder, but also supports the entire platform. By connecting the upper step 2 of the telescopic ladder to the fixed plate 8, the operator can safely go up and down at a high place, ensuring the stability of the step 2 during use, and avoiding inclination or deformation caused by gravity or operating load.

[0037] Further, the driving unit 5 is installed on the vehicle body 9, which includes a hydraulic cylinder, the telescopic rod of which is connected with any one of the steps 2 except the uppermost step 2. When the hydraulic cylinder drives the telescopic ladder to open, the handrails 1 are set to be inclined relative to the vehicle body 9, forming a certain angle, so as to make it more convenient for the user to climb; when the hydraulic cylinder drives the telescopic ladder to be retracted, the handrails 1 are set to be parallel to the vehicle body 9. Although it is more difficult to climb at this time, the design can save the unfolding space, so that the telescopic ladder is suitable for narrow occasions, such as tunnels, mountain roads and other environments, and improves the adaptability of the engineering vehicle in limited space.

[0038] It should be noted that each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A telescoping escalator, characterized in that, The handrail (1), a plurality of steps (2) and a plurality of pull rods (3) are included. The plurality of steps (2) are sequentially arranged on the handrail (1) in the up-down direction, wherein each of the steps (2) has oppositely arranged first and second connecting ends (21, 22), the first connecting end (21) is rotatably mounted on the handrail (1), and the plurality of pull rods (3) are arranged between adjacent steps (2), each of the pull rods (3) is pivotally connected between the first connecting end (21) of one step (2) and the second connecting end (22) of another step (2). The telescopic ladder further comprises a driving unit (5) connected with any step (2) except the uppermost step (2) for driving the connected step (2) to move relative to the uppermost step (2) to open or fold the telescopic ladder.

2. The escalator according to claim 1, wherein The second connecting end (22) of each step (2) is rotatably mounted on a linkage rod (4).

3. The escalator according to claim 2, wherein The pull rod (3) and the linkage rod (4) are both telescopic rods with adjustable length.

4. The escalator according to claim 1, wherein The tread surface of the step (2) is provided with an anti-skid structure.

5. The escalator according to claim 2, wherein The first connecting end of each step (2) is provided with a first pivot (6) rotatably penetrating the handrail (1) and the end of one pull rod (3).

6. The escalator according to claim 5, wherein The second connecting end of each step (2) is provided with a second pivot (7) rotatably penetrating the end of one pull rod (3) and the linkage rod (4).

7. The escalator according to claim 6, wherein Each pull rod has opposite first and second ends, the first end is arranged adjacent to the first connecting end of one step (2) and rotatably sleeved on the first pivot (6), and the second end is arranged adjacent to the second connecting end of another step (2) and rotatably sleeved on the second pivot (7).

8. An engineering vehicle characterized by, The vehicle body (9), a fixed plate (8) connected with the vehicle body (9), and the telescopic ladder according to any one of claims 1 to 7 are included, and the uppermost step (2) of the telescopic ladder is mounted on the fixed plate (8).

9. The work vehicle of claim 8, wherein, The driving unit (5) is arranged on the vehicle body (9).

10. The work vehicle of claim 8, wherein, The driving unit (5) comprises a hydraulic cylinder, and the telescopic rod of the hydraulic cylinder is connected with any step (2) except the uppermost step (2).

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